Author: Physics Notebook
-
What Is The “Equation Of Continuity”?
—
by
Equation of Continuity: When a fluid ( liquid or gas ) flows in a tube of flow in streamline motion, the rate of flow of mass of the fluid through any cross-sectional area of the tube remains the same, this means that the quantity of fluid entering one end of a flow per second is…
-
Explain The Principle Of Venturimeter.
—
by
Venturimeter: Venturimeter is a device to measure the rate of flow of a liquid through a pipe based on Bernoulli’s theorem, as shown in Fig.1. It consists of a horizontal pipe whose middle portion is narrow and two sides are wide. Let us consider and be the pressure and velocity of the liquid at the…
-
Discuss The Effect Of Temperature And Pressure On Viscosity Of Liquid.
—
by
Effect Of Temperature: The viscosity of liquid decreases with increase in temperature. No definite relation has been found to exist between viscosity and temperature, but various emperical formulas have been suggested from time to time which are all approximate. Slotte gave the emperical formula where, and are the coefficient of viscosity at and respectively. and…
-
State And Prove Bernoulli’s Theorem From Work-Energy Theorem.
—
by
Bernoulli’s Theorem from Work-Energy Theorem: Let us consider a tube AB of an incompressible fluid of density . Let , and , and , are respectively the cross sectional area, velocities and pressure at the ends and . So the volume of fluid entering A per second is , and the volume of fluid leaving…
-
Calculate The Maximum Range Of Flow Of A Liquid Through An Orifice In A Reservoir.
—
by
Range of Flow: As the liquid escapes through the orifice, it has zero vertical velocity and let be the horizontal velocity. It flows out in the form of a parabolic jet. Let this jet strikes the ground at a distance s from the tank after a time . Let be the vertical distance covered by…
-
Show That The Speed Of A Liquid Coming Out Through A Hole At A Depth “h” Bellow The Free Surface In A Tank Is The Same As That Of A Particle Falling Through A Height “h” Under Gravity.
—
by
Torricelli’s Theorem: This theorem states that the velocity of efflux of a liquid through an orifice is equal to the velocity which a freely falling body attains while falling through a height equal to the height of the free surface of the liquid above the orifice. Velocity of Efflux of a liquid: Let us consider…
-
State Torricelli’s Theorem.
—
by
Torricelli’s Theorem: This theorem states that the velocity of efflux of a liquid through an orifice is equal to the velocity which a freely falling body attains while falling through a height equal to the height of the free surface of the liquid above the orifice.
-
State And Prove Bernoulli’s Theorem.
—
by
Bernoulli’s Theorem: In streamline motion of an incompressible liquid, the total energy of the liquid i.e., the sum of potential energy, kinetic energy and pressure energy remains constant at all points. Proof: Let is consider a tube of flow as shown in the fig.1 . Let, at the point , be the cross sectional area,…
-
Why Do You Find Cloud Particles Floating In the Sky And Raindrops Falling Through The Air Instead Of Floating In It?
—
by
The tiny drops of water have a radius as small as 0.001cm and their terminal velocity when they fall through the air of coefficient of viscosity is about 1.2 cm/sec. So they remain suspended in the air and float as clouds. On the other hand, the bigger raindrops have a radius of about 10 times…
-
Derive An Expression For The Terminal Velocity Of A Body Falling Freely Through A Viscous Liquid. How Are The Corrections For Wall Effect And End Effect Introduced?
—
by
Expression for terminal velocity: When a small spherical sphere of radius , falls through a liquid of coefficient of viscosity with terminal velocity , then the effective weight of the spherical ball in the liquid is balanced by the viscous force of the liquid given by, If be the density of the material of the…